In Illinois, state Highway 251 traces the original Highway 51 route before it became part of Interstate 39 in Rockford. Along 251, there’s no shortage of attractions to explore.

U.S. Highway 51 South at the Union and Pulaski County line is closed following a vehicle accident. The Union County Sheriff's ...

UNION COUNTY, Ill. (KFVS) - Highway 51 is closed at the Union County and Pulaski County line due to a crash.